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Cheap flights from Washington to Jeju-do from $542

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Jeju-do departing on 7/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington to Jeju-do

Cheap round-trip flights

Enter your travel dates to find the best prices.
Cathay Pacific Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Cathay Pacific Logo
7:30 am - 10:20 am
CJU
-
SEA
18h 50m
1 stop
$870Cathay Pacific
Tue, Sep 1 - Tue, Sep 15
Multiple Airlines Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Multiple Airlines Logo
7:30 am - 3:15 pm
CJU
-
SEA
23h 45m
2 stops
$1,129Multiple Airlines
Tue, Sep 1 - Tue, Sep 15
Multiple Airlines Logo
12:10 am - 10:30 pm
SEA
-
CJU
30h 20m
2 stops
Multiple Airlines Logo
7:25 am - 3:15 pm
CJU
-
SEA
23h 50m
2 stops
$1,201Multiple Airlines
Mon, Aug 31 - Tue, Sep 15
Asiana Airlines Logo
12:10 am - 9:35 am
SEA
-
CJU
17h 25m
1 stop
Asiana Airlines Logo
2:30 pm - 3:15 pm
CJU
-
SEA
16h 45m
1 stop
$1,333Asiana Airlines
Tue, Sep 29 - Tue, Oct 6
Multiple Airlines Logo
12:10 am - 5:30 pm
SEA
-
CJU
25h 20m
2 stops
Multiple Airlines Logo
5:45 pm - 6:32 pm
CJU
-
SEA
40h 47m
3 stops
$1,408Multiple Airlines
Tue, Sep 29 - Tue, Oct 6
Multiple Airlines Logo
12:10 am - 8:35 pm
SEA
-
CJU
28h 25m
2 stops
Multiple Airlines Logo
9:15 am - 3:15 pm
CJU
-
SEA
22h 00m
3 stops
$1,421Multiple Airlines
Mon, Aug 31 - Tue, Sep 15
Multiple Airlines Logo
12:10 am - 5:30 pm
SEA
-
CJU
25h 20m
2 stops
Multiple Airlines Logo
7:30 am - 6:40 pm
CJU
-
SEA
27h 10m
2 stops
$1,438Multiple Airlines
Tue, Sep 29 - Tue, Oct 6
Asiana Airlines Logo
12:10 am - 8:30 pm
SEA
-
CJU
28h 20m
1 stop
Asiana Airlines Logo
6:30 am - 3:45 pm
CJU
-
SEA
25h 15m
1 stop
$1,478Asiana Airlines
Thu, Aug 6 - Sun, Aug 16
Multiple Airlines Logo
4:25 pm - 8:25 am
SEA
-
CJU
48h 00m
2 stops
Multiple Airlines Logo
3:55 pm - 12:25 pm
CJU
-
SEA
36h 30m
2 stops
$1,537Multiple Airlines
Fri, Aug 7 - Sun, Aug 16
Multiple Airlines Logo
12:10 am - 2:15 pm
SEA
-
CJU
22h 05m
1 stop
Multiple Airlines Logo
7:30 am - 6:40 pm
CJU
-
SEA
27h 10m
2 stops
$1,552Multiple Airlines
Tue, Sep 29 - Tue, Oct 6

Cathay Pacific flights from State of Washington to Jeju-do

Our best Cathay Pacific deals on State of Washington to Jeju-do flight tickets
Cathay Pacific
Sep 1
SEA12:25 pmSeattle/Tacoma Intl
26h 05m
1 stop
CJU6:30 amJeju City
Sep 15
CJU7:30 amJeju City
18h 50m
1 stop
SEA10:20 amSeattle/Tacoma Intl
$870
Cathay Pacific
Jul 4
SEA12:25 pmSeattle/Tacoma Intl
26h 05m
1 stop
CJU6:30 amJeju City
Jul 11
CJU7:30 amJeju City
18h 50m
1 stop
SEA10:20 amSeattle/Tacoma Intl
$1,711
Cathay Pacific
Aug 18
SEA12:25 pmSeattle/Tacoma Intl
26h 05m
1 stop
CJU6:30 amJeju City
Aug 26
CJU7:30 amJeju City
18h 50m
1 stop
SEA10:20 amSeattle/Tacoma Intl
$1,991

China Eastern flights from State of Washington to Jeju-do

Our best China Eastern deals on State of Washington to Jeju-do flight tickets
China Eastern
Oct 20
SEA7:20 amSeattle/Tacoma Intl
37h 10m
2 stops
CJU12:30 pmJeju City
Oct 22
CJU7:10 pmJeju City
37h 49m
2 stops
SEA4:59 pmSeattle/Tacoma Intl
$3,820
China Eastern
Aug 18
SEA10:40 pmSeattle/Tacoma Intl
45h 50m
2 stops
CJU12:30 pmJeju City
Aug 26
CJU7:10 pmJeju City
37h 03m
2 stops
SEA4:13 pmSeattle/Tacoma Intl
$3,923
China Eastern
Oct 18
SEA7:20 amSeattle/Tacoma Intl
37h 10m
2 stops
CJU12:30 pmJeju City
Oct 22
CJU7:10 pmJeju City
37h 49m
2 stops
SEA4:59 pmSeattle/Tacoma Intl
$4,696

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Jeju-do that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 20, 2026.
Use the filters below to find and compare flights from Washington to Jeju-do that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 9/1

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Tue 9/15

7:30 am-10:20 am

1 stop18h 50m

$870

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 9/1

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Tue 9/15

7:30 am-3:15 pm

2 stops23h 45m

$1,129

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Mon 8/31

12:10 am-10:30 pm

2 stops30h 20m

Jeju City

Tue 9/15

7:25 am-3:15 pm

2 stops23h 50m

$1,201
Quickest round-trip

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 9/29

12:10 am-9:35 am

1 stop17h 25m

Jeju City

Tue 10/6

2:30 pm-3:15 pm

1 stop16h 45m

$1,333

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 9/29

12:10 am-5:30 pm

2 stops25h 20m

Jeju City

Tue 10/6

5:45 pm-6:32 pm

3 stops40h 47m

$1,408

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Mon 8/31

12:10 am-8:35 pm

2 stops28h 25m

Jeju City

Tue 9/15

9:15 am-3:15 pm

3 stops22h 00m

$1,421

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 9/29

12:10 am-5:30 pm

2 stops25h 20m

Jeju City

Tue 10/6

7:30 am-6:40 pm

2 stops27h 10m

$1,438

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Thu 8/6

12:10 am-8:30 pm

1 stop28h 20m

Jeju City

Sun 8/16

6:30 am-3:45 pm

1 stop25h 15m

$1,478

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Fri 8/7

4:25 pm-8:25 am

2 stops48h 00m

Jeju City

Sun 8/16

3:55 pm-12:25 pm

2 stops36h 30m

$1,537

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 9/29

12:10 am-2:15 pm

1 stop22h 05m

Jeju City

Tue 10/6

7:30 am-6:40 pm

2 stops27h 10m

$1,552

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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Cheap State of Washington to Jeju-do flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Jeju-do

Fastest flight time

26h 05m

Direct flights

None
The fastest flight from State of Washington to Jeju-do takes 26h 05m
There are no direct flights from State of Washington to Jeju-do. There are no popular flight routes from State of Washington to Jeju-do.
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Frequently asked questions about flying from Washington to Jeju-do

  • When did momondo last update prices for flights from Washington to Jeju-do?

    Prices for flights from Washington to Jeju-do are updated daily.

  • How old do you have to be to fly from Washington to Jeju-do?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Jeju-do.

  • What documentation or ID do you need to fly to Jeju-do?

    The travel and health documents you'll need for your trip to Jeju-do may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Jeju-do. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Washington to Jeju-do

  • How do I get Price Alerts for flights from State of Washington to Jeju-do?

    Price Alerts will notify you by email when the price for flights to Jeju-do from State of Washington decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from State of Washington to Jeju-do with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Jeju-do?

It is quick and easy to find Washington to Jeju-do flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Jeju-do that suits you.

Can I find flights from Washington to Jeju-do with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington to Jeju-do flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to Jeju-do?

Once all potential Washington to Jeju-do flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington to Jeju-do right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Jeju-do, momondo offers a useful price alert feature which will track prices for flights to Jeju-do from Washington and alert you when they change.

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Find better results for your trip to Jeju-do

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